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/*
 * Copyright (c) 2022 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 */
package org.eclipse.ditto.wot.model;

/**
 * FormElementSubprotocol describes the {@code subprotocol} of a {@link FormElement}.
 * "Indicates the exact mechanism by which an interaction will be accomplished for a given protocol when there are
 * multiple options."
 *
 * @since 2.4.0
 */
public interface FormElementSubprotocol extends CharSequence {

    static FormElementSubprotocol of(final CharSequence charSequence) {
        if (charSequence instanceof FormElementSubprotocol) {
            return (FormElementSubprotocol) charSequence;
        }
        return new ImmutableFormElementSubprotocol(charSequence);
    }
}