Add ensureNonNull utility method to Utilities class
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                 Key: GEOT-3039
                 URL: http://jira.codehaus.org/browse/GEOT-3039
             Project: GeoTools
          Issue Type: Wish
          Components: core metadata
            Reporter: Daniele Romagnoli
         Attachments: gt-metadata.patch

Some classes use a ensureNonNull private static method like this:

    /**
     * Makes sure that an argument is non-null.
     * 
     * @param name Argument name.
     * @param object User argument.
     * @throws NullPointerException if {...@code object} is null.
     */
    public static void ensureNonNull(final String name, final Object object)

which basically check that an argument is non-null.
It would be useful to have such a method exposed as public, as an instance on 
the metadata module which has an Utilities class containing static utility 
methods. 

The attached patch will add this.

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