Gravity form dynamically populate select drop down with taxonomy terms

GravityForm-Dynamic-Selects.php

<?php
/**
 * --------------------------------------------------
 *  Gravity Form dynamically populate drop-down
 *  select for Questions form ID 15
 *  'gform_pre_render_14' - _14 represents form ID to filter
 * --------------------------------------------------
 */
add_filter( 'gform_pre_render_14', 'pre_populate_gravity_select_for_MY_TAX' );
add_filter( 'gform_pre_validation_14', 'pre_populate_gravity_select_for_MY_TAX' );
add_filter( 'gform_pre_submission_filter_14', 'pre_populate_gravity_select_for_MY_TAX' );
add_filter( 'gform_admin_pre_render_14', 'pre_populate_gravity_select_for_MY_TAX' );
function pre_populate_gravity_select_for_MY_TAX($form) {
  foreach ( $form['fields'] as &$field ) {
    if ( $field->type != 'select' || strpos( $field->cssClass, 'populate-select' ) === false ) {
      continue;
    }
    $terms = get_terms(array('MY_TAXONOMY'));
    $choices = array();
    foreach ( $terms as $term ) {
      $choices[] = array( 'text' => $term->name, 'value' => $term->name );
    }
    $field->placeholder = 'Select Option';
    $field->choices = $choices;
  }
  return $form;
}

When adding, form field (select) add class populate-select to target only that specific select. This refers to this check:

strpos( $field->cssClass, 'populate-select' ) === false