liquibase-core/src/main/java/liquibase/configuration/LiquibaseConfiguration.java
public ConfigurationProperty getProperty(Class<? extends ConfigurationContainer> type, String property) {
        ConfigurationContainer configuration = getConfiguration(type);
        return configuration.getProperty(property);
    }
public ConfigurationProperty getProperty(Class<? extends ConfigurationContainer> type, String property) {
        ConfigurationContainer configuration = getConfiguration(type);
        return configuration.getProperty(property);
    }
Convenience method for liquibaseConfiguration.getConfiguration(type).getProperty(property)