code: protected LightweightTypeReference getDeclaredParameterType(JvmFormalParameter declaredParam, final ITypeComputationState state) {
  		JvmTypeReference parameterType = declaredParam.getParameterType();
  		if (parameterType == null)
  			return null;
  		return state.getReferenceOwner().toLightweightTypeReference(parameterType);
  	}
docs: /* @Nullable