I have a problem to extend a "TaxProvider", I'm creating from a plug-in to manage taxes and taxation, functionality and operation is perfect, the problem is that I need access to methods that are protected, I suggest to be public in order to extended without problem.
The methods are getTax () and setPrecision (int) of all documents. example

• Org.compiere.model.MOrderTax.getTax ()

• Org.compiere.model.MOrderTax.setPrecision (int)
  Should be usefull also the updateDOCTax(boolean) methods.