liquibase-core/src/main/java/liquibase/change/ChangeFactory.java
public Change create(String name) {
        Change plugin = getPlugin(name);
        if (plugin == null) {
            return null;
        }
        try {
            return plugin.getClass().getConstructor().newInstance();
        } catch (Exception e) {
            throw new UnexpectedLiquibaseException(e);
        }
    }
public Change create(String name) {
        Change plugin = getPlugin(name);
        if (plugin == null) {
            return null;
        }
        try {
            return plugin.getClass().getConstructor().newInstance();
        } catch (Exception e) {
            throw new UnexpectedLiquibaseException(e);
        }
    }
Create a new Change implementation for the given change name. The class of the constructed object will be the Change implementation with the highest priority.
Each call to create will return a new instance of the Change.