public Builder addAllContents(java.lang.Iterable<java.lang.String> values) {
      ensureContentsIsMutable();
      com.google.protobuf.AbstractMessageLite.Builder.addAll(values, contents_);
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
Required. The content of the input in string format.
</pre>

<code>repeated string contents = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@param values The contents to add.
@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/RomanizeTextRequest.java