### Question:
BlockHashRequest { public BlockHashRequest action(ActionEnum action) { this.action = action; return this; }  BlockHashRequest action(ActionEnum action); @ApiModelProperty(required = true, value = "") ActionEnum getAction(); void setAction(ActionEnum action); BlockHashRequest jsonBlock(ModelBoolean jsonBlock); @ApiModelProperty(value = "Defaults to `\"false\"`. If `\"true\"`, `\"block\"` contains a JSON subtree instead of a JSON string.") ModelBoolean getJsonBlock(); void setJsonBlock(ModelBoolean jsonBlock); BlockHashRequest block(BlockDataJson block); @ApiModelProperty(required = true, value = "") BlockDataJson getBlock(); void setBlock(BlockDataJson block); @Override boolean equals(java.lang.Object o); @Override int hashCode(); @Override String toString(); static final String SERIALIZED_NAME_ACTION; static final String SERIALIZED_NAME_JSON_BLOCK; static final String SERIALIZED_NAME_BLOCK; }### Answer:
@Test public void actionTest() { }