LearnDash_Settings_Section_Emails_List::is_valid_sub_section()
Method: Utility function to check if sub section is valid.
@since: 3.6.0 | Uses: 1 function | Used By: 1 function
@package: LearnDash / Settings / Sections
Source Files: includes/settings/settings-sections/class-ld-settings-section-emails-list.php
@package: LearnDash / Settings / Sections
Source Files: includes/settings/settings-sections/class-ld-settings-section-emails-list.php