# Source: src/ol/proj/common.js

    goog.provide('ol.proj.common');

    goog.require('ol.proj');
    goog.require('ol.proj.EPSG3857');
    goog.require('ol.proj.EPSG4326');

    /**
     * FIXME empty description for jsdoc
     * @todo api
     */
    ol.proj.common.add = function() {
      // Add transformations that don't alter coordinates to convert within set of
      // projections with equal meaning.
      ol.proj.addEquivalentProjections(ol.proj.EPSG3857.PROJECTIONS);
      ol.proj.addEquivalentProjections(ol.proj.EPSG4326.PROJECTIONS);
      // Add transformations to convert EPSG:4326 like coordinates to EPSG:3857 like
      // coordinates and back.
      ol.proj.addEquivalentTransforms(
          ol.proj.EPSG4326.PROJECTIONS,
          ol.proj.EPSG3857.PROJECTIONS,
          ol.proj.EPSG3857.fromEPSG4326,
          ol.proj.EPSG3857.toEPSG4326);
    };