### Question:
RoleGroup extends BaseEntity implements RoleGroupEntry { public String getGroupOid() { return groupOid; }  String getRoleOid(); void setRoleOid(String roleOid); String getGroupOid(); void setGroupOid(String groupOid); @JsonIgnore @Override String getId(); @JsonIgnore @Override String getRoleId();  }### Answer:
@Test public void getGroupOid() throws Exception { entity.setGroupOid("123451234512345"); assertEquals("123451234512345", entity.getGroupOid()); }