/**This function sets a musician's Orchestra Section.
 @param section  is a SymphonySection indicating the musician's Orchestra Section.*/

 public void setSection(SymphonySection section) {
    this.section = section;

    if (getSection().toString().equals( "Strings" )){
        Strings--;
    }
    else if (getSection().toString().equals( "Brass" )){
        Brass--;
    }
    else if (getSection().toString().equals( "Conductor" )){
        Conductor--;
    }
    else if (getSection().toString().equals( "Percussion" )){
        Percussion--;
    }
    else if (getSection().toString().equals( "WoodWinds" )){
        WoodWinds--;
    }

    if (section.toString().equals( "Strings" )){
        Strings++;
    }
    else if (section.toString().equals( "Brass" )){
        Brass ++;
    }
    else if (section.toString().equals( "Conductor" )){
        Conductor ++;
    }
    else if (section.toString().equals( "Percussion" )){
        Percussion ++;
    }
    else if (section.toString().equals( "WoodWinds" )){
        WoodWinds ++;
    }

}

private final Map<SymphonySection, Integer> count = new HashMap<>();
public void setSection(SymphonySection section) {
    if(section == this.section) return;

    count.put(this.section, count.get(this.section)-1);
    Integer prevCount = count.get(section)
    count.put(section, prevCount == null ? 1 : (prevCount+1));

    this.section = section;
}