### Question:
ActiveDifficultyRequest { public ActiveDifficultyRequest action(ActionEnum action) { this.action = action; return this; }  ActiveDifficultyRequest action(ActionEnum action); @ApiModelProperty(required = true, value = "") ActionEnum getAction(); void setAction(ActionEnum action); ActiveDifficultyRequest includeTrend(ModelBoolean includeTrend); @ApiModelProperty(value = "Boolean, false by default. Also returns the trend of difficulty seen on the network as a list of multipliers. Sampling occurs every 16 to 36 seconds. The list is ordered such that the first value is the most recent sample. ") ModelBoolean getIncludeTrend(); void setIncludeTrend(ModelBoolean includeTrend); @Override boolean equals(java.lang.Object o); @Override int hashCode(); @Override String toString(); static final String SERIALIZED_NAME_ACTION; static final String SERIALIZED_NAME_INCLUDE_TREND; }### Answer:
@Test public void actionTest() { }