setUsage( value ) {

		this.usage = value;

		return this;

	}
Sets the usage of this buffer attribute.

@param {(StaticDrawUsage|DynamicDrawUsage|StreamDrawUsage|StaticReadUsage|DynamicReadUsage|StreamReadUsage|StaticCopyUsage|DynamicCopyUsage|StreamCopyUsage)} value - The usage to set.
@return {BufferAttribute} A reference to this buffer attribute.