private void insufficientArgs() {
        throw new IllegalArgumentException("Insufficient args " +
                Arrays.asList(fromSchema, fromTable, fromColumn) + " to " +
                Arrays.asList(toSchema, toTable, toColumn));
    }
{@code RenameMapping} overrides schemas, tables, columns and combinations of the three.

@author tiwe
querydsl-sql-codegen/src/main/java/com/querydsl/sql/codegen/support/RenameMapping.java