private void ensureArgTypesIsMutable() {
      if (!argTypes_.isModifiable()) {
        argTypes_ = new com.google.protobuf.LazyStringArrayList(argTypes_);
      }
      bitField0_ |= 0x00000004;
    }
<code>repeated bytes args = 2;</code>
@return This builder for chaining.
remoting/remoting-triple/build/generated/source/proto/main/java/triple/Request.java