petition_liege_0101_title_liege_effect

petition_liege_0101_title_liege_effect = {
	scope:petition_liege = {
		stress_and_fulfillment_impact = {
			greedy = medium_stress_impact_gain
		}
	}
	create_title_and_vassal_change = {
		type = granted
		save_scope_as = change
		add_claim_on_loss = no
	}
	scope:petition_claim = {
		change_title_holder_include_vassals = {
			holder = scope:petition_vassal
			change = scope:change
		}
	}
	resolve_title_and_vassal_change = scope:change
	scope:petition_vassal = {
		hidden_effect = {
			send_interface_toast = {
				title = petition_liege.0101.t.title_liege
				left_icon = scope:petition_liege
				show_as_tooltip = {
					scope:petition_vassal = { get_title = scope:petition_claim }
				}
			}
		}
	}
	scope:petition_liege = {
		hidden_effect = {
			send_interface_toast = {
				title = petition_liege.0101.t.title_liege
				left_icon = scope:petition_vassal
				show_as_tooltip = {
					scope:petition_vassal = { get_title = scope:petition_claim }
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_petition_liege_effects.txt.