code: func IsVolumeCapabilityCompatible(
  	a *csi.VolumeCapability, b []*csi.VolumeCapability) (bool, error) {
  
  	return AreVolumeCapabilitiesCompatible([]*csi.VolumeCapability{a}, b)
  }
docs: // IsVolumeCapabilityCompatible returns a flag indicating whether
  // the volume capability "a" is compatible with the set "b". A true value
  // indicates that "a" and "b" are equivalent or "b" is a superset of "a".