* This method checks geo equivalence between two meshes : 'this' and 'other'.
* If no exception is throw 'this' and 'other' are geometrically equivalent regarding 'levOfCheck' level.
* This method is typically used to change the mesh of a field "safely" depending the 'levOfCheck' level considered.
+ * So in case of success cell \c other[i] is equal to cell \c this[cellCor[i]]. If \a cellCor is null it means that for all i cell \c other[i] is equal to cell \c this[i].
*
* @param levOfCheck input that specifies the level of check specified. The possible values are listed below.
* @param prec input that specifies precision for double float data used for comparison in meshes.