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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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    http://www.apache.org/licenses/LICENSE-2.0

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distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.common.usermodel.fonts;

import org.apache.poi.util.Beta;

A FontFacet holds the font data for a shape of a font, i.e. a regular,
italic, bold or bold-italic version of a Font.
/**
 * A FontFacet holds the font data for a shape of a font, i.e. a regular,
 * italic, bold or bold-italic version of a Font.
 */
@SuppressWarnings("unused")
@Beta
public interface FontFacet {
    
Get the font weight.

The weight of the font in the range 0 through 1000.
For example, 400 is normal and 700 is bold.
If this value is zero, a default weight is used.
Returns:
the font weight
Since:
POI 4.1.0/**
     * Get the font weight.<p>
     *
     * The weight of the font in the range 0 through 1000.
     * For example, 400 is normal and 700 is bold.
     * If this value is zero, a default weight is used.
     *
     * @return the font weight
     *
     * @since POI 4.1.0
     */
    default int getWeight() {
        return FontHeader.REGULAR_WEIGHT;
    }

    
Set the font weight
Params:
weight – the font weight/**
     * Set the font weight
     *
     * @param weight the font weight
     */
    default void setWeight(int weight) {
        throw new UnsupportedOperationException("FontFacet is read-only.");
    }

    
Returns:
true, if the font is italic/**
     * @return {@code true}, if the font is italic
     */
    default boolean isItalic() {
        return false;
    }

    
Set the font posture
Params:
italic – true for italic, false for regular/**
     * Set the font posture
     *
     * @param italic {@code true} for italic, {@code false} for regular
     */
    default void setItalic(boolean italic) {
        throw new UnsupportedOperationException("FontFacet is read-only.");
    }

    
Returns:
the wrapper object holding the font data/**
     * @return the wrapper object holding the font data
     */
    default Object getFontData() {
        return null;
    }
}