Update docs for 1.4.1 release
diff --git a/docs/dyn/genomics_v1beta2.variants.html b/docs/dyn/genomics_v1beta2.variants.html
index 7b1c3f1..9943984 100644
--- a/docs/dyn/genomics_v1beta2.variants.html
+++ b/docs/dyn/genomics_v1beta2.variants.html
@@ -99,7 +99,7 @@
     The object takes the form of:
 
 { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-    "info": { # A map of additional variant information.
+    "info": { # A string which maps to an array of values.
       "a_key": [ # A string which maps to an array of values.
         "A String",
       ],
@@ -108,7 +108,7 @@
     "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
     "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
       { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-        "info": { # A map of additional variant call information.
+        "info": { # A string which maps to an array of values.
           "a_key": [ # A string which maps to an array of values.
             "A String",
           ],
@@ -146,7 +146,7 @@
   An object of the form:
 
     { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-      "info": { # A map of additional variant information.
+      "info": { # A string which maps to an array of values.
         "a_key": [ # A string which maps to an array of values.
           "A String",
         ],
@@ -155,7 +155,7 @@
       "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
       "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
         { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-          "info": { # A map of additional variant call information.
+          "info": { # A string which maps to an array of values.
             "a_key": [ # A string which maps to an array of values.
               "A String",
             ],
@@ -209,7 +209,7 @@
   An object of the form:
 
     { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-      "info": { # A map of additional variant information.
+      "info": { # A string which maps to an array of values.
         "a_key": [ # A string which maps to an array of values.
           "A String",
         ],
@@ -218,7 +218,7 @@
       "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
       "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
         { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-          "info": { # A map of additional variant call information.
+          "info": { # A string which maps to an array of values.
             "a_key": [ # A string which maps to an array of values.
               "A String",
             ],
@@ -263,17 +263,17 @@
     The object takes the form of:
 
 { # The variant search request.
-    "end": "A String", # Required. The end of the window (0-based, exclusive) for which overlapping variants should be returned.
-    "pageSize": 42, # The maximum number of variants to return.
-    "start": "A String", # Required. The beginning of the window (0-based, inclusive) for which overlapping variants should be returned.
-    "maxCalls": 42, # The maximum number of calls to return. However, at least one variant will always be returned, even if it has more calls than this limit.
+    "end": "A String", # The end of the window, 0-based exclusive. If unspecified or 0, defaults to the length of the reference.
+    "pageSize": 42, # The maximum number of variants to return. If unspecified, defaults to 5000.
+    "start": "A String", # The beginning of the window (0-based, inclusive) for which overlapping variants should be returned. If unspecified, defaults to 0.
+    "maxCalls": 42, # The maximum number of calls to return. However, at least one variant will always be returned, even if it has more calls than this limit. If unspecified, defaults to 5000.
     "pageToken": "A String", # The continuation token, which is used to page through large result sets. To get the next page of results, set this parameter to the value of nextPageToken from the previous response.
     "callSetIds": [ # Only return variant calls which belong to call sets with these ids. Leaving this blank returns all variant calls. If a variant has no calls belonging to any of these call sets, it won't be returned at all. Currently, variants with no calls from any call set will never be returned.
       "A String",
     ],
     "variantName": "A String", # Only return variants which have exactly this name.
     "referenceName": "A String", # Required. Only return variants in this reference sequence.
-    "variantSetIds": [ # Exactly one variant set ID must be provided. Only variants from this variant set will be returned.
+    "variantSetIds": [ # At most one variant set ID must be provided. Only variants from this variant set will be returned. If omitted, a call set id must be included in the request.
       "A String",
     ],
   }
@@ -286,7 +286,7 @@
     "nextPageToken": "A String", # The continuation token, which is used to page through large result sets. Provide this value in a subsequent request to return the next page of results. This field will be empty if there aren't any additional results.
     "variants": [ # The list of matching Variants.
       { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-          "info": { # A map of additional variant information.
+          "info": { # A string which maps to an array of values.
             "a_key": [ # A string which maps to an array of values.
               "A String",
             ],
@@ -295,7 +295,7 @@
           "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
           "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
             { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-              "info": { # A map of additional variant call information.
+              "info": { # A string which maps to an array of values.
                 "a_key": [ # A string which maps to an array of values.
                   "A String",
                 ],
@@ -341,7 +341,7 @@
     The object takes the form of:
 
 { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-    "info": { # A map of additional variant information.
+    "info": { # A string which maps to an array of values.
       "a_key": [ # A string which maps to an array of values.
         "A String",
       ],
@@ -350,7 +350,7 @@
     "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
     "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
       { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-        "info": { # A map of additional variant call information.
+        "info": { # A string which maps to an array of values.
           "a_key": [ # A string which maps to an array of values.
             "A String",
           ],
@@ -388,7 +388,7 @@
   An object of the form:
 
     { # A variant represents a change in DNA sequence relative to a reference sequence. For example, a variant could represent a SNP or an insertion. Variants belong to a variant set. Each of the calls on a variant represent a determination of genotype with respect to that variant. For example, a call might assign probability of 0.32 to the occurrence of a SNP named rs1234 in a sample named NA12345. A call belongs to a call set, which contains related calls typically from one sample.
-      "info": { # A map of additional variant information.
+      "info": { # A string which maps to an array of values.
         "a_key": [ # A string which maps to an array of values.
           "A String",
         ],
@@ -397,7 +397,7 @@
       "end": "A String", # The end position (0-based) of this variant. This corresponds to the first base after the last base in the reference allele. So, the length of the reference allele is (end - start). This is useful for variants that don't explicitly give alternate bases, for example large deletions.
       "calls": [ # The variant calls for this particular variant. Each one represents the determination of genotype with respect to this variant.
         { # A call represents the determination of genotype with respect to a particular variant. It may include associated information such as quality and phasing. For example, a call might assign a probability of 0.32 to the occurrence of a SNP named rs1234 in a call set with the name NA12345.
-          "info": { # A map of additional variant call information.
+          "info": { # A string which maps to an array of values.
             "a_key": [ # A string which maps to an array of values.
               "A String",
             ],