code: public Datatype.Builder removeStandardMethodUnderrides(StandardMethod key) {
      Objects.requireNonNull(key);
      standardMethodUnderrides.remove(key);
      return (Datatype.Builder) this;
    }
docs: Removes the mapping for {@code key} from the map to be returned from {@link
  Datatype#getStandardMethodUnderrides()}, if one is present.
  
  @return this {@code Builder} object
  @throws NullPointerException if {@code key} is null