All MBeans which logically contain other MBeans implement this interface;
such an MBean is considered a Container, and the contained MBean is considered
a Containee. The interface indicates the potential to contain other
MBeans; at any given time MBeans may or may not be contained.
Return a Map keyed by j2eeType. The value corresponding to each
key (j2eeType) is another Map, as returned from {@link #getContaineeMap}.
If the passed Set is null, then all types are obtained. Pass
the set returned from {@link #getContaineeJ2EETypes} to get all currently
present containees.
param
j2eeTypes the j2eeTypes to look for, or null for all
return
Map (possibly empty) of j2eeType=<Map of name=AMX>