mpo_add_golden_lineage_effect

mpo_add_golden_lineage_effect = {
	add_trait = golden_lineage
	if = {
		limit = {
			OR = {
				has_realm_law = female_only_law
				has_realm_law = female_preference_law
			}
		}
		every_child = {
			custom = descendants_gain_golden_lineage_female
			limit = {
				NOT = { has_trait = golden_lineage }
			}
			add_trait = golden_lineage
			if = {
				limit = {
					is_female = yes
				}
				every_child = {
					limit = {
						NOT = { has_trait = golden_lineage }
					}
					add_trait = golden_lineage
					if = {
						limit = {
							is_female = yes
						}
						every_child = {
							limit = {
								NOT = { has_trait = golden_lineage }
							}
							add_trait = golden_lineage
							if = {
								limit = {
									is_female = yes
								}
								every_child = {
									limit = {
										NOT = { has_trait = golden_lineage }
									}
									add_trait = golden_lineage
									if = {
										limit = {
											is_female = yes
										}
										every_child = {
											limit = {
												NOT = { has_trait = golden_lineage }
											}
											add_trait = golden_lineage
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
	else = {
		every_child = {
			custom = descendants_gain_golden_lineage_male
			limit = {
				NOT = { has_trait = golden_lineage }
			}
			add_trait = golden_lineage
			if = {
				limit = {
					is_male = yes
				}
				every_child = {
					limit = {
						NOT = { has_trait = golden_lineage }
					}
					add_trait = golden_lineage
					if = {
						limit = {
							is_male = yes
						}
						every_child = {
							limit = {
								NOT = { has_trait = golden_lineage }
							}
							add_trait = golden_lineage
							if = {
								limit = {
									is_male = yes
								}
								every_child = {
									limit = {
										NOT = { has_trait = golden_lineage }
									}
									add_trait = golden_lineage
									if = {
										limit = {
											is_male = yes
										}
										every_child = {
											limit = {
												NOT = { has_trait = golden_lineage }
											}
											add_trait = golden_lineage
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/09_mpo_greatest_of_khans_effects.txt.