Base class for {@linkplain DirectPosition direct position} implementations. This base classprovides default implementations for {@link #toString}, {@link #equals} and {@link #hashCode}methods.
This class do not holds any state. The decision to implement {@link java.io.Serializable}or {@link org.geotools.util.Cloneable} interfaces is left to implementors.
@since 2.4
@source $URL$
@version $Id$
@author Martin Desruisseaux (IRD)
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