Returns the list of platform MXBeans implementing
mxbeanInterface in the Java
The returned list may contain zero, one, or more instances.
The number of instances in the returned list is defined
in the specification of the given management interface.
The order is undefined and there is no guarantee that
the list returned is in the same order as previous invocations.
|a management interface for a platform MXBean|
| an |
| if |