code: public SkillDetails withSkillTypes(String... skillTypes) {
          if (this.skillTypes == null) {
              setSkillTypes(new java.util.ArrayList<String>(skillTypes.length));
          }
          for (String ele : skillTypes) {
              this.skillTypes.add(ele);
          }
          return this;
      }
docs: <p>
  The types of skills.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSkillTypes(java.util.Collection)} or {@link #withSkillTypes(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param skillTypes
  The types of skills.
  @return Returns a reference to this object so that method calls can be chained together.