WP_REST_Request::is_json_content_type()

Source

File: wp-includes/rest-api/class-wp-rest-request.php

public function is_json_content_type() {
		$content_type = $this->get_content_type();

		return isset( $content_type['value'] ) && wp_is_json_media_type( $content_type['value'] );
	}