parameters: (self, tgen, group=None)
docstring: add a task or a task generator for the build
docstring_summary: add a task or a task generator for the build
docstring_tokens: add a task or a task generator for the build
function: def add_to_group(self, tgen, group=None):
  		"""add a task or a task generator for the build"""
  		# paranoid
  		assert(isinstance(tgen, TaskGen.task_gen) or isinstance(tgen, Task.TaskBase))
  		tgen.bld = self
  		self.get_group(group).append(tgen)
function_tokens: def add_to_group ( self , tgen , group = None ) : # paranoid assert ( isinstance ( tgen , TaskGen . task_gen ) or isinstance ( tgen , Task . TaskBase ) ) tgen . bld = self self . get_group ( group ) . append ( tgen )