code: function(definition, client) {
  
    this.client = client;
  
    this.schema = null;
  
    this.ddlHelper = {
      tableName: null,
      pkAttrName: null,
      pkAutoIncrement: false,
      attrNamesToColNames: {},
      attrTypes: {},
      colNamesToAttrNames: {},
      colTypes: {},
      defaultValues: {},
      cqlCreateTable: null,
      indexes: {}
    };
  
    this._parseDefinition(definition);
  }
docs: Collection
  
  Constructor of collection
  @param {Object} definition
  @param {Client} cassandra client