Learndash_Model::has_attribute()
Method: Returns true if an attribute exists. Otherwise, false.
@since: 4.5.0 | @deprecated: 4.6.0
@package: LearnDash / Deprecated
Source Files: src/deprecated/Learndash_Model.php
@package: LearnDash / Deprecated
Source Files: src/deprecated/Learndash_Model.php