Registry::getPrefixGroupedUserFunctions

public Registry::getPrefixGroupedUserFunctions()

public function getPrefixGroupedUserFunctions() {
  $functions = get_defined_functions();

  $grouped_functions = [];
  // Splitting user defined functions into groups by the first prefix.
  foreach ($functions['user'] as $function) {
    list($first_prefix, ) = explode('_', $function, 2);
    $grouped_functions[$first_prefix][] = $function;
  }

  return $grouped_functions;
}