BP_Component::start( string $id = '', string $name = '', string $path = '', array $params = array() )

	public function start( $id = '', $name = '', $path = '', $params = array() ) {

		// Internal identifier of component.
		$this->id   = $id;

		// Internal component name.
		$this->name = $name;

		// Path for includes.
		$this->path = $path;

		// Miscellaneous component parameters that need to be set early on.
		if ( ! empty( $params ) ) {
			// Sets the position for our menu under the WP Toolbar's "My Account" menu.
			if ( ! empty( $params['adminbar_myaccount_order'] ) ) {
				$this->adminbar_myaccount_order = (int) $params['adminbar_myaccount_order'];
			}

			// Register features.
			if ( ! empty( $params['features'] ) ) {
				$this->features = array_map( 'sanitize_title', (array) $params['features'] );
			}

			if ( ! empty( $params['search_query_arg'] ) ) {
				$this->search_query_arg = sanitize_title( $params['search_query_arg'] );
			}

		// Set defaults if not passed.
		} else {
			// New component menus are added before the settings menu if not set.
			$this->adminbar_myaccount_order = 90;
		}

		// Move on to the next step.
		$this->setup_actions();
	}