The SVNErrorCode class represents possible predefined kinds
of errors with their own identifying information. Each SVNErrorCode
has its common description, belongs to a definite category of errors and
also has its unique error code int value based upon the category.
Error codes (values, common descriptions and categories) are similar
to ones in the native SVN.
version: 1.1.1 author: TMate Software Ltd.
Gets an error code object given its unique error code number.
If no definite error code objects corresponds to the provided
value, returns
SVNErrorCode.UNKNOWN .
Parameters: code - an error code number a corresponding SVNErrorCode.