public Builder addArgTypesBytes(
        com.google.protobuf.ByteString value) {
      if (value == null) { throw new NullPointerException(); }
      checkByteStringIsUtf8(value);
      ensureArgTypesIsMutable();
      argTypes_.add(value);
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<code>repeated string argTypes = 3;</code>
@param value The bytes of the argTypes to add.
@return This builder for chaining.
remoting/remoting-triple/build/generated/source/proto/main/java/triple/Request.java