Tries to resolve the Ini instance to use for configuration. This implementation functions as follows:
<ol>
<li>The {@code Ini} instance returned from {@link #getIni()} will be returned if it is not null or empty.</li>
<li>If {@link #getIni()} is {@code null} or empty, this implementation will attempt to find and load the
{@link #loadDefaultClassPathIni() default class path Ini}.</li>
<li>If neither of the two attempts above returns an instance, {@code null} is returned</li>
</ol>
@return the Ini instance to use for configuration.
Tries to resolve the Ini instance to use for configuration. This implementation functions as follows: <ol> <li>The {@code Ini} instance returned from {@link #getIni()} will be returned if it is not null or empty.</li> <li>If {@link #getIni()} is {@code null} or empty, this implementation will attempt to find and load the {@link #loadDefaultClassPathIni() default class path Ini}.</li> <li>If neither of the two attempts above returns an instance, {@code null} is returned</li> </ol>
@return the Ini instance to use for configuration.