liquibase-core/src/main/java/liquibase/Scope.java
public static void child(Map<String, Object> scopeValues, ScopedRunner runner) throws Exception {
        child((LiquibaseListener) null, scopeValues, runner);
    }
public static void child(Map<String, Object> scopeValues, ScopedRunner runner) throws Exception {
        child((LiquibaseListener) null, scopeValues, runner);
    }
Creates a new scope that is a child of this scope.