A Nested Diagnostic Context, or NDC in short, is an instrument to distinguish
interleaved log output from different sources. Log output is typically
interleaved when a server handles multiple script calls near-simultaneously.
Constructor Summary
This class does not have a constructor, so you cannot create it directly.
Looks at the last diagnostic context at the top of this NDC without
removing it.
The returned value is the value that was pushed last. If no context is
available, then the empty string "" is returned.
Clients should call this method before leaving a diagnostic context.
The returned value is the value that was pushed last.
If no context is available, then the empty string "" is returned.
NOTE: The NDC is removed after every script execution.