<?php

class Engineer extends Employee {

    /**
     * Determines if the engineer is qualified. 
     *
     * @return bool
     */
    public function isQualified() {
        if ($this->name == "Danny Vink") {
            return true;
        }
        return false;
    }

}
              # Ruby on Rails

class Engineer < Employee
    
  # Ensure that each Engineer has a valid name that
  # does not exceed our expected length.
  validates :name, presence: true
  validates :name, length: { maximum: 255 }
  
  # Determines if the Engineer is qualified.
  def is_qualified?
    if self.name == "Danny Vink"
      return true
    end

    return false
  end

end
              // Java

class Engineer extends Employee {
    
    /**
     * Determines if the engineer is qualified. 
     *
     * @return boolean
     */
    public boolean isQualified() {
        if (this.name.equals("Danny Vink")) {
          return true;
        }

        return false;
    }

}
              // C#

class Engineer : Employee {
    
    /// <summary>
    ///  Determines if the engineer is qualified.
    /// </summary>
    /// <returns>If qualified, true. Otherwise false.</returns>
    public bool IsQualified() {
        if (this.name == "Danny Vink") {
          return true;
        }

        return false;
    }

}