array getExcludedSniffs(
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		Return a list of external sniffs to exclude from this standard.
External locations can be single sniffs, a whole directory of sniffs, or  an entire coding standard. Locations start with the standard name. For  example:   PEAR                              => exclude all sniffs in this standard   PEAR/Sniffs/Files                 => exclude all sniffs in this dir   PEAR/Sniffs/Files/LineLengthSniff => exclude this single sniff