chore: regens API reference docs (#889)

diff --git a/docs/dyn/sheets_v4.spreadsheets.developerMetadata.html b/docs/dyn/sheets_v4.spreadsheets.developerMetadata.html
index 8956b2e..1b582c7 100644
--- a/docs/dyn/sheets_v4.spreadsheets.developerMetadata.html
+++ b/docs/dyn/sheets_v4.spreadsheets.developerMetadata.html
@@ -78,7 +78,7 @@
   <code><a href="#get">get(spreadsheetId, metadataId, x__xgafv=None)</a></code></p>
 <p class="firstline">Returns the developer metadata with the specified ID.</p>
 <p class="toc_element">
-  <code><a href="#search">search(spreadsheetId, body, x__xgafv=None)</a></code></p>
+  <code><a href="#search">search(spreadsheetId, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Returns all developer metadata matching the specified DataFilter.</p>
 <h3>Method Details</h3>
 <div class="method">
@@ -124,8 +124,8 @@
         "sheetId": 42, # The sheet this span is on.
         "dimension": "A String", # The dimension of the span.
       },
-      "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
       "sheetId": 42, # The ID of the sheet when metadata is associated with an entire sheet.
+      "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
     },
     "visibility": "A String", # The metadata visibility.  Developer metadata must always have a visibility
         # specified.
@@ -135,7 +135,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="search">search(spreadsheetId, body, x__xgafv=None)</code>
+    <code class="details" id="search">search(spreadsheetId, body=None, x__xgafv=None)</code>
   <pre>Returns all developer metadata matching the specified DataFilter.
 If the provided DataFilter represents a DeveloperMetadataLookup object,
 this will return all DeveloperMetadata entries selected by it. If the
@@ -144,14 +144,14 @@
 
 Args:
   spreadsheetId: string, The ID of the spreadsheet to retrieve metadata from. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A request to retrieve all developer metadata matching the set of specified
       # criteria.
     "dataFilters": [ # The data filters describing the criteria used to determine which
         # DeveloperMetadata entries to return.  DeveloperMetadata matching any of the
-        # specified filters will be included in the response.
+        # specified filters are included in the response.
       { # Filter that describes what data should be selected or returned from a
           # request.
         "developerMetadataLookup": { # Selects DeveloperMetadata that matches all of the specified fields.  For # Selects data associated with the developer metadata matching the criteria
@@ -181,8 +181,8 @@
               "sheetId": 42, # The sheet this span is on.
               "dimension": "A String", # The dimension of the span.
             },
-            "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
             "sheetId": 42, # The ID of the sheet when metadata is associated with an entire sheet.
+            "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
           },
           "metadataValue": "A String", # Limits the selected developer metadata to that which has a matching
               # DeveloperMetadata.metadata_value.
@@ -297,8 +297,8 @@
                   "sheetId": 42, # The sheet this span is on.
                   "dimension": "A String", # The dimension of the span.
                 },
-                "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
                 "sheetId": 42, # The ID of the sheet when metadata is associated with an entire sheet.
+                "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
               },
               "metadataValue": "A String", # Limits the selected developer metadata to that which has a matching
                   # DeveloperMetadata.metadata_value.
@@ -395,8 +395,8 @@
               "sheetId": 42, # The sheet this span is on.
               "dimension": "A String", # The dimension of the span.
             },
-            "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
             "sheetId": 42, # The ID of the sheet when metadata is associated with an entire sheet.
+            "spreadsheet": True or False, # True when metadata is associated with an entire spreadsheet.
           },
           "visibility": "A String", # The metadata visibility.  Developer metadata must always have a visibility
               # specified.