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#### What type of PR is this?

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#### What this PR does / why we need it:

#### Which issue(s) this PR is related to:

public class SuggestItem {

    /**
     * The kind of suggest item.
     */
    public enum Kind {
        /** Document kind. */
        DOCUMENT("document"),
        /** Query kind. */
        QUERY("query"),
        /** User kind. */
        USER("user");

        private final String kind;

        /**
         * Constructor for Kind.
         * @param kind The kind string.
         */

Just use any kind of model, any kind of class, any kind of database that you need for your application. **FastAPI** has you covered with the dependency injection system.

## Code size { #code-size }

This example might seem verbose. Keep in mind that we are mixing security, data models, utility functions and *path operations* in the same file.

	type Profile struct {
		gorm.Model
		Name         string
		Kind         string
		ProfileRefer uint
	}

	type User struct {
		gorm.Model
		Profiles []Profile `gorm:"many2many:user_profiles;foreignKey:Refer,Kind;joinForeignKey:UserRefer,Kind;References:ProfileRefer,Kind;joinReferences:ProfileR,Kind"`
		Kind     string
		Refer    uint
	}

	checkStructRelation(t, &User{}, Relation{

     * {@link Kind#BEFORE} or {@link Kind#AFTER}, and a {@link Pointer} to
     * another phase.
     */
    interface Link {
        enum Kind {
            BEFORE,
            AFTER
        }

        /**
         * Returns the kind of link (BEFORE or AFTER).
         *
         * @return the link kind
         */
        Kind kind();

        /**

        return deleteWordsByKind(index, FieldNames.QUERY_FREQ, SuggestItem.Kind.QUERY, item -> item.setQueryFreq(0),
                SuggestItem.Kind.DOCUMENT, SuggestItem.Kind.USER);
    }

    /**
     * Common method to delete words by kind.
     *
     * @param index The index name
     * @param freqField The frequency field name
     * @param kindToRemove The kind to remove
     * @param freqSetter The consumer to set frequency to 0

        request.addField(field);
        return this;
    }

    /**
     * Adds a kind to filter by.
     * @param kind The kind.
     * @return This builder instance.
     */
    public SuggestRequestBuilder addKind(final String kind) {
        request.addKind(kind);
        return this;
    }

    /**
     * Sets whether to return detailed suggestion information.

 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.interpolation;

/*

    }

    @Test
    public void testConcatKinds() {
        // Test static concatKinds method
        SuggestItem.Kind[] kinds1 = { SuggestItem.Kind.QUERY };
        SuggestItem.Kind[] kinds2 = { SuggestItem.Kind.DOCUMENT, SuggestItem.Kind.QUERY };

        SuggestItem.Kind[] result = SuggestItem.concatKinds(kinds1, kinds2);

        assertNotNull(result);

     */
    public void addField(final String field) {
        fields.add(field);
    }

    /**
     * Adds a kind to filter by.
     * @param kind The kind.
     */
    public void addKind(final String kind) {
        kinds.add(kind);
    }

    /**
     * Sets whether to return detailed suggestion information.