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Standard interfaces implemented throughout the library.

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/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2003-2005, Open Geospatial Consortium Inc.
 *
 *    All Rights Reserved. http://www.opengis.org/legal/
 */
package org.opengis.referencing.crs;

import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;

import org.opengis.annotation.UML;
import org.opengis.referencing.operation.Conversion;

/**
 * A coordinate reference system that is defined by its coordinate {@linkplain Conversion
 * conversion} from another coordinate reference system (not by a {@linkplain
 * org.opengis.referencing.datum.Datum datum}).
 *
 * @version Abstract
 *     specification 2.0
 * @author Martin Desruisseaux (IRD)
 * @since GeoAPI 1.0
 */
@UML(identifier = "SC_GeneralDerivedCRS", specification = ISO_19111)
public interface GeneralDerivedCRS extends SingleCRS {
    /**
     * Returns the base coordinate reference system.
     *
     * @return The base coordinate reference system.
     */
    @UML(identifier = "baseCRS", obligation = MANDATORY, specification = ISO_19111)
    CoordinateReferenceSystem getBaseCRS();

    /**
     * Returns the conversion from the {@linkplain #getBaseCRS base CRS} to this CRS.
     *
     * @return The conversion from the base CRS.
     * @rename {@code definedByConversion} may be a precise description of the association, but may
     *     be confusing as a method name since it doesn't said which CRS is the source or which one
     *     is the target. OGC document 01-009 used {@code toBase()} method name. By analogy with
     *     01-009, this new interface specifies a method name which contains the {@code FromBase}
     *     words.
     */
    @UML(identifier = "definedByConversion", obligation = MANDATORY, specification = ISO_19111)
    Conversion getConversionFromBase();
}