AbstractReferenceSystem changes for revisions 28105:28106

Method has been renamed as a result of a change in GeoAPI interface. Reverting this change causes a compilation error, which can be fixed only by re-applying exactly the same renaming.

The deprecated method has been removed from Geotk/SIS.

Command line:

svn diff --extensions "--unified --ignore-space-change --ignore-all-space --ignore-eol-style" -r28105:28106 https://svn.osgeo.org/geotools/trunk/modules/library/referencing/src/main/java/org/geotools/referencing/AbstractReferenceSystem.java
Revision 28105Revision 28106
}

/**
 * Area for which the (coordinate) reference system is valid.
 * Returns {@code null} if not available.
 */
public Extent getValidArea() {
    return validArea;
}

/**
 * Description of domain of usage, or limitations of usage, for which this
 
}

/**
 * Area or region or timeframe in which this datum is valid.
 *
 * @return The datum valid domain, or {@code null} if not available.
 *
 * @since GeoAPI 2.1
 */
public Extent getDomainOfValidity() {
    return validArea;
}
/**
 * Area or region in which this datum object is valid.
 * @deprecated Use getDomainOfValidity
 */
public Extent getValidArea() {
    return getDomainOfValidity();
}

/**
 * Description of domain of usage, or limitations of usage, for which this