presto-thrift-api/src/main/java/io/prestosql/plugin/thrift/api/PrestoThriftNullableSchemaName.java/PrestoThriftNullableSchemaName/PrestoThriftNullableSchemaName
class PrestoThriftNullableSchemaName:    @ThriftConstructor
    public PrestoThriftNullableSchemaName(@Nullable String schemaName)
    {
        this.schemaName = schemaName;
    }