'null' ),
					'default'     => null,
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'style'            => array(
					'description' => __( 'Public facing and editor style handle.' ),
					'type'        => array( 'string', 'null' ),
					'default'     => null,
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'styles'           => array(
					'description' => __( 'Block style variations.' ),
					'type'        => 'array',
					'items'       => array(
						'type'       => 'object',
						'properties' => array(
							'name'         => array(
								'description' => __( 'Unique name identifying the style.' ),
								'type'        => 'string',
								'required'    => true,
							),
							'label'        => array(
								'description' => __( 'The human-readable label for the style.' ),
								'type'        => 'string',
							),
							'inline_style' => array(
								'description' => __( 'Inline CSS code that registers the CSS class required for the style.' ),
								'type'        => 'string',
							),
							'style_handle' => array(
								'description' => __( 'Contains the handle that defines the block style.' ),
								'type'        => 'string',
							),
						),
					),
					'default'     => array(),
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'variations'       => array(
					'description' => __( 'Block variations.' ),
					'type'        => 'array',
					'items'       => array(
						'type'       => 'object',
						'properties' => array(
							'name'        => array(
								'description' => __( 'The unique and machine-readable name.' ),
								'type'        => 'string',
								'required'    => true,
							),
							'title'       => array(
								'description' => __( 'A human-readable variation title.' ),
								'type'        => 'string',
								'required'    => true,
							),
							'description' => array(
								'description' => __( 'A detailed variation description.' ),
								'type'        => 'string',
								'required'    => false,
							),
							'category'    => $category_definition,
							'icon'        => $icon_definition,
							'isDefault'   => array(
								'description' => __( 'Indicates whether the current variation is the default one.' ),
								'type'        => 'boolean',
								'required'    => false,
								'default'     => false,
							),
							'attributes'  => array(
								'description' => __( 'The initial values for attributes.' ),
								'type'        => 'object',
							),
							'innerBlocks' => $inner_blocks_definition,
							'example'     => $example_definition,
							'scope'       => array(
								'description' => __( 'The list of scopes where the variation is applicable. When not provided, it assumes all available scopes.' ),
								'type'        => array( 'array', 'null' ),
								'default'     => null,
								'items'       => array(
									'type' => 'string',
									'enum' => array( 'block', 'inserter', 'transform' ),
								),
								'readonly'    => true,
							),
							'keywords'    => $keywords_definition,
						),
					),
					'readonly'    => true,
					'context'     => array( 'embed', 'view', 'edit' ),
					'default'     => null,
				),
				'textdomain'       => array(
					'description' => __( 'Public text domain.' ),
					'type'        => array( 'string', 'null' ),
					'default'     => null,
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'parent'           => array(
					'description' => __( 'Parent blocks.' ),
					'type'        => array( 'array', 'null' ),
					'items'       => array(
						'type' => 'string',
					),
					'default'     => null,
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'ancestor'         => array(
					'description' => __( 'Ancestor blocks.' ),
					'type'        => array( 'array', 'null' ),
					'items'       => array(
						'type' => 'string',
					),
					'default'     => null,
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'keywords'         => $keywords_definition,
				'example'          => $example_definition,
			),
		);

		$this->schema = $schema;

		return $this->add_additional_fields_schema( $this->schema );
	}

	/**
	 * Retrieves the query params for collections.
	 *
	 * @since 5.5.0
	 *
	 * @return array Collection parameters.
	 */
	public function get_collection_params() {
		return array(
			'context'   => $this->get_context_param( array( 'default' => 'view' ) ),
			'namespace' => array(
				'description' => __( 'Block namespace.' ),
				'type'        => 'string',
			),
		);
	}

}