code: public static TypeAnnotationPosition
          typeParameterBound(final List<TypePathEntry> location,
                             final int parameter_index,
                             final int bound_index) {
          return typeParameterBound(location, null, parameter_index,
                                    bound_index, -1);
      }
docs: Create a {@code TypeAnnotationPosition} for a type parameter bound.
  
  @param location The type path.
  @param parameter_index The index of the type parameter.
  @param bound_index The index of the type parameter bound.