if (customPreVariableTypes!=null) {
for (VariableType customVariableType: customPreVariableTypes) {
variableTypes.addType(customVariableType);
}
}
variableTypes.addType(new NullType());
variableTypes.addType(new StringType(4000));
variableTypes.addType(new LongStringType(4001));
variableTypes.addType(new BooleanType());
variableTypes.addType(new ShortType());
variableTypes.addType(new IntegerType());