WordPress at a glance
function is not described

_get_custom_object_labels() WP 3.0.0

Build an object with custom-something object (post type, taxonomy) labels out of a custom-something object

No Hooks.

Return

Object. Object containing labels for the given custom-something object.

Usage

_get_custom_object_labels( $object, $nohier_vs_hier_defaults );
$object(object) (required)
A custom-something object.
$nohier_vs_hier_defaults(array) (required)
Hierarchical vs non-hierarchical default labels.

Code of get custom object labels: wp-includes/post.php VER 5.1.1

<?php
function _get_custom_object_labels( $object, $nohier_vs_hier_defaults ) {
	$object->labels = (array) $object->labels;

	if ( isset( $object->label ) && empty( $object->labels['name'] ) ) {
		$object->labels['name'] = $object->label;
	}

	if ( ! isset( $object->labels['singular_name'] ) && isset( $object->labels['name'] ) ) {
		$object->labels['singular_name'] = $object->labels['name'];
	}

	if ( ! isset( $object->labels['name_admin_bar'] ) ) {
		$object->labels['name_admin_bar'] = isset( $object->labels['singular_name'] ) ? $object->labels['singular_name'] : $object->name;
	}

	if ( ! isset( $object->labels['menu_name'] ) && isset( $object->labels['name'] ) ) {
		$object->labels['menu_name'] = $object->labels['name'];
	}

	if ( ! isset( $object->labels['all_items'] ) && isset( $object->labels['menu_name'] ) ) {
		$object->labels['all_items'] = $object->labels['menu_name'];
	}

	if ( ! isset( $object->labels['archives'] ) && isset( $object->labels['all_items'] ) ) {
		$object->labels['archives'] = $object->labels['all_items'];
	}

	$defaults = array();
	foreach ( $nohier_vs_hier_defaults as $key => $value ) {
		$defaults[ $key ] = $object->hierarchical ? $value[1] : $value[0];
	}
	$labels         = array_merge( $defaults, $object->labels );
	$object->labels = (object) $object->labels;

	return (object) $labels;
}