ProtectedboundingRender the bracket using the given backend
Render Vexflow context
Returns whether this object is an instance of the class, e.g. isInstanceOfClass(GraphicalMeasure).
The class, or its name (e.g. GraphicalMeasure.name). A name is unreliable in minified builds: they rename the classes, and give different classes the same name, e.g. "a" to GraphicalMeasure and GraphicalNote.
Class that defines a instrument bracket at the beginning of a line.