IDLParserErrorContext is passed into the parse() functions defined by the IDL generator as an input parameter initially used to perform validation checks and throw exceptions.  However, as the use cases for the IDL generator has evolved, IDLParserErrorContext no longer only handles errors and exceptions, but maintains additional parameters and utility functions.  Prior to adding new non error-related parameters of our own, we have agreed with Service Arch to rename IDLParserErrorContext to IDLParserContext, which will require changes to the IDL generator in addition to call sites.