public static void setDefaultStyle(ToStringStyle style) {
        if (style == null) {
            throw new IllegalArgumentException("The style must not be null");
        }
        defaultStyle = style;
    }
<p>Sets the default <code>ToStringStyle</code> to use.</p>

<p>This method sets a singleton default value, typically for the whole JVM.
Changing this default should generally only be done during application startup.
It is recommended to pass a <code>ToStringStyle</code> to the constructor instead
of changing this global default.</p>

<p>This method is not intended for use from multiple threads.
Internally, a <code>volatile</code> variable is used to provide the guarantee
that the latest value set is the value returned from {@link #getDefaultStyle}.</p>

@param style  the default <code>ToStringStyle</code>
@throws IllegalArgumentException if the style is <code>null</code>
android/android_framework/base/src/main/java/lang3/builder/ToStringBuilder.java