setFromBufferAttribute( attribute ) {

		this.makeEmpty();

		for ( let i = 0, il = attribute.count; i < il; i ++ ) {

			this.expandByPoint( _vector$b.fromBufferAttribute( attribute, i ) );

		}

		return this;

	}
Sets the upper and lower bounds of this box so it encloses the position data
in the given buffer attribute.

@param {BufferAttribute} attribute - A buffer attribute holding 3D position data.
@return {Box3} A reference to this bounding box.