WRAPPER_API const BmgChar *get_CalculatedSignature()
The get_CalculatedSignature method returns the signature calculated from the current contents of the change log file. The change log is written out with a calculated signature value based on the current contents at the time it is saved. If the file is edited prior to being loaded, the signature saved in the file will not match the value returned by this method, which is the signature calculated from the (edited) contents of the file. Note: this method may take several seconds to complete.