Description:
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SCA::getService() is using 
   $backtrace                 = debug_backtrace();
   $immediate_caller_filename = $backtrace[0]['file'];
to calculate the immediate_caller_filename/directory.  When SCA::getService() is called from fillInReferences, this corresponds to the SCA.php file, not the component.

Expected result:
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$immediate_caller_filename/directory should be the component filename and directory.

Actual result:
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$immediate_caller_filename/directory are the SCA.php filename and directory.