js/jquery.cloudinary.js
function Expression(expressionStr) {

      /**
        * @protected
        * @inner Expression-expressions
       */
      this.expressions = [];
      if (expressionStr != null) {
        this.expressions.push(Expression.normalize(expressionStr));
      }
    }
function Expression(expressionStr) {

      /**
        * @protected
        * @inner Expression-expressions
       */
      this.expressions = [];
      if (expressionStr != null) {
        this.expressions.push(Expression.normalize(expressionStr));
      }
    }
Represents a transformation expression
@param {string} expressionStr - a expression in string format
@class Expression