Options parser for the tool.
Options parser for the tool. (Should be a subtype in subclasses.)
Execute a tool after argument parsing.
Handle options parsing and top-level error handling while calling run()
Sets the named property under this toolPrefix to the value if
Some.
Sets the named property under this toolPrefix to the value if
Some. Does not change the value of the property if the value
is None. Note: this should not be changed to remove when
None is given, otherwise values given as properties will be
ignored.
Sets the named property under this toolPrefix to the value.