SYNOPSIS
use JE::Object::Error::SyntaxError;
# Somewhere in code called by an eval{}
die new JE::Object::Error::SyntaxError $global, "(Error message here)";
# Later:
$@->prop('message'); # error message
$@->prop('name'); # 'SyntaxError'
"$@"; # 'SyntaxError: ' plus the error message

