@Deprecated
    @SuppressWarnings("unchecked")
    public T schema(String schema) {
        checkNotNull(schema);
        internalProperties.putString(FORMAT_SCHEMA, schema);
        return (T) this;
    }
Sets the format schema. Required if schema is not derived.

<p>Note: This schema defined by this method will be removed if
{@link #field(String, FormatInfo)} is called.</p>

@param schema The format schema.
inlong-sort/sort-formats/format-common/src/main/java/org/apache/inlong/sort/formats/base/TextFormatDescriptor.java