code: public static TypeAnnotationPosition
          methodParameter(final List<TypePathEntry> location,
                          final JCLambda onLambda,
                          final int parameter_index,
                          final int pos) {
          return new TypeAnnotationPosition(TargetType.METHOD_FORMAL_PARAMETER,
                                            pos, parameter_index, onLambda,
                                            Integer.MIN_VALUE, Integer.MIN_VALUE,
                                            location);
      }
docs: Create a {@code TypeAnnotationPosition} for a method formal parameter.
  
  @param location The type path.
  @param onLambda The lambda for this parameter.
  @param parameter_index The index of the parameter.
  @param pos The position from the associated tree node.