Proposal: Show warning when type referenced in docBlock is not valid

[mcustiel]

It would be nice that the semantic analysis shows a warning when a Class referenced in @var or @return or @param is invalid. For instance:

/**
 * @var MyClassName
 */
private $myProperty;

Should show a warning if MyClassName is not in the same namespace that the current class and was not included with a use statement.

[zulus]

This is already implemented in PDT