applyMatrix4( m ) {

		for ( let i = 0, l = this.data.count; i < l; i ++ ) {

			_vector$7.fromBufferAttribute( this, i );

			_vector$7.applyMatrix4( m );

			this.setXYZ( i, _vector$7.x, _vector$7.y, _vector$7.z );

		}

		return this;

	}
Applies the given 4x4 matrix to the given attribute. Only works with
item size `3`.

@param {Matrix4} m - The matrix to apply.
@return {InterleavedBufferAttribute} A reference to this instance.