code: function loadFrom(options) {
      options = options || {};
      var isConfig = options.isConfig === true;
      var filename = options.filename || this.getDefaultFilePath(isConfig);
      if (!this.resolvedProfiles[filename]) {
        var fileContent = this.parseFile(filename, isConfig);
        Object.defineProperty(this.resolvedProfiles, filename, { value: fileContent });
      }
      return this.resolvedProfiles[filename];
    }
docs: Load configurations from config/credentials files and cache them
  for later use. If no file is specified it will try to load default
  files.
  @param options [map] information describing the file
  @option options filename [String] ('~/.aws/credentials' or defined by
  AWS_SHARED_CREDENTIALS_FILE process env var or '~/.aws/config' if
  isConfig is set to true)
  path to the file to be read.
  @option options isConfig [Boolean] (false) True to read config file.
  @return [map<String,String>] object containing contents from file in key-value
  pairs.