PID_KEY
Deprecated (for removal)
Since version 3.2.0
The name of the System property that contains the process ID.
Deprecated
since 3.2.0 for removal in 3.4.0 in favor of calling getEnvironmentVariableName on PID
The name of the System property that contains the process ID.
since 3.2.0 for removal in 3.4.0 in favor of calling getEnvironmentVariableName on PID