private void AssignToImplicitReturn(Expression expression)
{
Debug.Assert(expression == _currExpressionStatement.Expression, "Invalid situation!");
expression.RemoveUser(_currExpressionStatement); //to avoid user complications!
var assign = new WriteIdentifierExpression(_implicitReturn, expression);
//_currExpressionStatement.Expression = assign;
_currExpressionStatement.Replace(_currExpressionStatement.Expression, assign);
TerminateCurrBlock();
}