return ownReferences.isEmpty() && nestedReferences.isEmpty();
    }

    public List<InputReference> getNestedReferences() {
        return nestedReferences;
    }

    public void addNestedReferences(InputReferences inputReferences) {
        nestedReferences.addAll(inputReferences.getOwnReferences());
        nestedReferences.addAll(inputReferences.getNestedReferences());
    }

    /**

                    parameter.setInitialExpression(ConstantExpression.NULL);
                }
            }
        } finally {
            if (parentInputs != null) {
                parentInputs.addNestedReferences(inputs);
            }
            inputs = parentInputs;
            inputsVariable = parentInputsVariable;
        }
    }

    @Override