Update docs
diff --git a/docs/dyn/sheets_v4.spreadsheets.sheets.html b/docs/dyn/sheets_v4.spreadsheets.sheets.html
new file mode 100644
index 0000000..f83b27b
--- /dev/null
+++ b/docs/dyn/sheets_v4.spreadsheets.sheets.html
@@ -0,0 +1,258 @@
+<html><body>
+<style>
+
+body, h1, h2, h3, div, span, p, pre, a {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  font-weight: inherit;
+  font-style: inherit;
+  font-size: 100%;
+  font-family: inherit;
+  vertical-align: baseline;
+}
+
+body {
+  font-size: 13px;
+  padding: 1em;
+}
+
+h1 {
+  font-size: 26px;
+  margin-bottom: 1em;
+}
+
+h2 {
+  font-size: 24px;
+  margin-bottom: 1em;
+}
+
+h3 {
+  font-size: 20px;
+  margin-bottom: 1em;
+  margin-top: 1em;
+}
+
+pre, code {
+  line-height: 1.5;
+  font-family: Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace;
+}
+
+pre {
+  margin-top: 0.5em;
+}
+
+h1, h2, h3, p {
+  font-family: Arial, sans serif;
+}
+
+h1, h2, h3 {
+  border-bottom: solid #CCC 1px;
+}
+
+.toc_element {
+  margin-top: 0.5em;
+}
+
+.firstline {
+  margin-left: 2 em;
+}
+
+.method  {
+  margin-top: 1em;
+  border: solid 1px #CCC;
+  padding: 1em;
+  background: #EEE;
+}
+
+.details {
+  font-weight: bold;
+  font-size: 14px;
+}
+
+</style>
+
+<h1><a href="sheets_v4.html">Google Sheets API</a> . <a href="sheets_v4.spreadsheets.html">spreadsheets</a> . <a href="sheets_v4.spreadsheets.sheets.html">sheets</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#copyTo">copyTo(spreadsheetId, sheetId, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Copies a single sheet from a spreadsheet to another spreadsheet.</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="copyTo">copyTo(spreadsheetId, sheetId, body, x__xgafv=None)</code>
+  <pre>Copies a single sheet from a spreadsheet to another spreadsheet.
+Returns the properties of the newly created sheet.
+
+Args:
+  spreadsheetId: string, The id of the spreadsheet containing the sheet to copy. (required)
+  sheetId: integer, The ID of the sheet to copy. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # The request to copy a sheet across spreadsheets.
+    "destinationSpreadsheetId": "A String", # The ID of the spreadsheet to copy the sheet to.
+  }
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Properties of a sheet.
+    "sheetType": "A String", # The type of sheet. Defaults to GRID.
+        # This field cannot be changed once set.
+    "index": 42, # The index of the sheet within the spreadsheet.
+        # When adding or updating sheet properties, if this field
+        # is excluded then the sheet will be added or moved to the end
+        # of the sheet list.
+    "title": "A String", # The name of the sheet.
+    "gridProperties": { # Properties of a grid. # Additional properties of the sheet if this sheet is a grid.
+        # (If the sheet is an object sheet, containing a chart or image, then
+        # this field will be absent.)
+        # When writing it is an error to set any grid properties on non-grid sheets.
+      "columnCount": 42, # The number of columns in the grid.
+      "rowCount": 42, # The number of rows in the grid.
+      "frozenColumnCount": 42, # The number of columns that are frozen in the grid.
+      "hideGridlines": True or False, # True if the grid isn't showing gridlines in the UI.
+      "frozenRowCount": 42, # The number of rows that are frozen in the grid.
+    },
+    "rightToLeft": True or False, # True if the sheet is an RTL sheet instead of an LTR sheet.
+    "tabColor": { # Represents a color in the RGBA color space. This representation is designed # The color of the tab in the UI.
+        # for simplicity of conversion to/from color representations in various
+        # languages over compactness; for example, the fields of this representation
+        # can be trivially provided to the constructor of "java.awt.Color" in Java; it
+        # can also be trivially provided to UIColor's "+colorWithRed:green:blue:alpha"
+        # method in iOS; and, with just a little work, it can be easily formatted into
+        # a CSS "rgba()" string in JavaScript, as well. Here are some examples:
+        #
+        # Example (Java):
+        #
+        #      import com.google.type.Color;
+        #
+        #      // ...
+        #      public static java.awt.Color fromProto(Color protocolor) {
+        #        float alpha = protocolor.hasAlpha()
+        #            ? protocolor.getAlpha().getValue()
+        #            : 1.0;
+        #
+        #        return new java.awt.Color(
+        #            protocolor.getRed(),
+        #            protocolor.getGreen(),
+        #            protocolor.getBlue(),
+        #            alpha);
+        #      }
+        #
+        #      public static Color toProto(java.awt.Color color) {
+        #        float red = (float) color.getRed();
+        #        float green = (float) color.getGreen();
+        #        float blue = (float) color.getBlue();
+        #        float denominator = 255.0;
+        #        Color.Builder resultBuilder =
+        #            Color
+        #                .newBuilder()
+        #                .setRed(red / denominator)
+        #                .setGreen(green / denominator)
+        #                .setBlue(blue / denominator);
+        #        int alpha = color.getAlpha();
+        #        if (alpha != 255) {
+        #          result.setAlpha(
+        #              FloatValue
+        #                  .newBuilder()
+        #                  .setValue(((float) alpha) / denominator)
+        #                  .build());
+        #        }
+        #        return resultBuilder.build();
+        #      }
+        #      // ...
+        #
+        # Example (iOS / Obj-C):
+        #
+        #      // ...
+        #      static UIColor* fromProto(Color* protocolor) {
+        #         float red = [protocolor red];
+        #         float green = [protocolor green];
+        #         float blue = [protocolor blue];
+        #         FloatValue* alpha_wrapper = [protocolor alpha];
+        #         float alpha = 1.0;
+        #         if (alpha_wrapper != nil) {
+        #           alpha = [alpha_wrapper value];
+        #         }
+        #         return [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
+        #      }
+        #
+        #      static Color* toProto(UIColor* color) {
+        #          CGFloat red, green, blue, alpha;
+        #          if (![color getRed:&red green:&green blue:&blue alpha:&alpha]) {
+        #            return nil;
+        #          }
+        #          Color* result = [Color alloc] init];
+        #          [result setRed:red];
+        #          [result setGreen:green];
+        #          [result setBlue:blue];
+        #          if (alpha <= 0.9999) {
+        #            [result setAlpha:floatWrapperWithValue(alpha)];
+        #          }
+        #          [result autorelease];
+        #          return result;
+        #     }
+        #     // ...
+        #
+        #  Example (JavaScript):
+        #
+        #     // ...
+        #
+        #     var protoToCssColor = function(rgb_color) {
+        #        var redFrac = rgb_color.red || 0.0;
+        #        var greenFrac = rgb_color.green || 0.0;
+        #        var blueFrac = rgb_color.blue || 0.0;
+        #        var red = Math.floor(redFrac * 255);
+        #        var green = Math.floor(greenFrac * 255);
+        #        var blue = Math.floor(blueFrac * 255);
+        #
+        #        if (!('alpha' in rgb_color)) {
+        #           return rgbToCssColor_(red, green, blue);
+        #        }
+        #
+        #        var alphaFrac = rgb_color.alpha.value || 0.0;
+        #        var rgbParams = [red, green, blue].join(',');
+        #        return ['rgba(', rgbParams, ',', alphaFrac, ')'].join('');
+        #     };
+        #
+        #     var rgbToCssColor_ = function(red, green, blue) {
+        #       var rgbNumber = new Number((red << 16) | (green << 8) | blue);
+        #       var hexString = rgbNumber.toString(16);
+        #       var missingZeros = 6 - hexString.length;
+        #       var resultBuilder = ['#'];
+        #       for (var i = 0; i < missingZeros; i++) {
+        #          resultBuilder.push('0');
+        #       }
+        #       resultBuilder.push(hexString);
+        #       return resultBuilder.join('');
+        #     };
+        #
+        #     // ...
+      "blue": 3.14, # The amount of blue in the color as a value in the interval [0, 1].
+      "alpha": 3.14, # The fraction of this color that should be applied to the pixel. That is,
+          # the final pixel color is defined by the equation:
+          #
+          #   pixel color = alpha * (this color) + (1.0 - alpha) * (background color)
+          #
+          # This means that a value of 1.0 corresponds to a solid color, whereas
+          # a value of 0.0 corresponds to a completely transparent color. This
+          # uses a wrapper message rather than a simple float scalar so that it is
+          # possible to distinguish between a default value and the value being unset.
+          # If omitted, this color object is to be rendered as a solid color
+          # (as if the alpha value had been explicitly given with a value of 1.0).
+      "green": 3.14, # The amount of green in the color as a value in the interval [0, 1].
+      "red": 3.14, # The amount of red in the color as a value in the interval [0, 1].
+    },
+    "hidden": True or False, # True if the sheet is hidden in the UI, false if it's visible.
+    "sheetId": 42, # The ID of the sheet. Must be non-negative.
+        # This field cannot be changed once set.
+  }</pre>
+</div>
+
+</body></html>
\ No newline at end of file