src/main/java/org/jfree/graphics2d/svg/StandardFontMapper.java
public String get(String family) {
        Args.nullNotPermitted(family, "family");
        return this.alternates.get(family);
    }
public String get(String family) {
        Args.nullNotPermitted(family, "family");
        return this.alternates.get(family);
    }
public String get ( String family ) { Args . nullNotPermitted ( family , "family" ) ; return this . alternates . get ( family ) ; }
Returns the mapped (alternate) font family name.

@param family  the font family ({@code null} not permitted).

@return The alternate font family name (possibly {@code null}).
Returns the mapped ( alternate ) font family name .