XA recovery - getXAResources(): when to close connections?

Hallo,

To add XA recovery to a connector, it is necessary to implement this method
in ResourceAdapter:

public XAResource[] getXAResources(ActivationSpec[] specs) throws
ResourceException

Let's say one spec is passed to this method, and using the connection
parameters specified in the spec, the connector establishes a connection to
the EIS. The returned XAResource represents this open connection to the EIS.

My question is when or how this connection to the EIS is supposed to be
closed. Afterall, there's no close() method on the XAResource, and the
container does not have a handle to the underlying connection.

Any insight into this question will be appreciated!
Kind regards,

Francois

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