code: function injectObjects(dest, settings) {
          var injections = settings.injections;
          if (!isArray(injections)) {
              error("Invalid injections array in inject settings");
          }
          var destDecls = dest._declarations;
          for (var i = 0, len = injections.length; i < len; i++) {
              var injection = injections[i];
              if (typeof injection !== "object") {
                  error("Invalid injection [" + i + "] in inject settings");
              }
              var destName = injection.name;
              if (!checkUnitName(destName)) {
                  error("Invalid injection name '"
                          + destName + "' [" + i + "] in inject settings");
              }
              if (injection.unit != null && injection.value !== undefined) {
                  error("Unit and value can't be used together [" + i
                          + "] in inject settings");
              }
              if (injection.unit != null) {
                  // Copy unit declaration.
                  if (!(settings.namespace instanceof Gumup)) {
                      error("Invalid namespace in inject settings");
                  }
                  var srcName = injection.unit;
                  if (!checkUnitName(srcName)) {
                      error("Invalid unit name '" + srcName
                              + "' [" + i + "] in inject settings");
                  }
                  var srcDecls = settings.namespace._declarations;
                  if (srcDecls[srcName] == null) {
                      error("Unresolvable unit declaration '" + srcName
                              + "' [" + i + "] in inject settigs");
                  }
                  destDecls[destName] = srcDecls[srcName];
              } else if (injection.value !== undefined) {
                  // Inject object as new declaration.
                  destDecls[destName] = new Declaration((function(obj) {
                      return function() {
                          return obj;
                      };
                  })(injection.value));
              } else {
                  error("Invalid injection object [" + i
                          + "] in inject settings");
              }
          }
      }
docs: Namespace extension ------------------- Iterate over `settings.injections`, doing each injection.