13.12.3 Locator Objects 
Instances of Locator provide these methods:
- getColumnNumber()
 - 
  Return the column number where the current event ends.
 
- getLineNumber()
 - 
  Return the line number where the current event ends.
 
- getPublicId()
 - 
  Return the public identifier for the current event.
 
- getSystemId()
 - 
  Return the system identifier for the current event.
 
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