public static Span getValue(Context context) {
    @javax.annotation.Nullable
    Span span = CONTEXT_SPAN_KEY.get(Utils.checkNotNull(context, "context"));
    return span == null ? BlankSpan.INSTANCE : span;
  }
public static Span getValue ( Context context ) { @ javax . annotation . Nullable Span span = CONTEXT_SPAN_KEY . get ( Utils . checkNotNull ( context , "context" ) ) ; return span == null ? BlankSpan . INSTANCE : span ; }
Returns the value from the specified {@code Context}.

@param context the specified {@code Context}.
@return the value from the specified {@code Context}.
@since 0.21