sets the value of the firstname property . concode_field_sep String firstname concode_elem_sep String password concode_elem_sep Long idPerson concode_elem_sep String birthdate concode_elem_sep String email concode_elem_sep String lastname concode_elem_sep String username concode_field_sep void setPassword concode_elem_sep void setLastname concode_elem_sep String getFirstname concode_elem_sep void setUsername concode_elem_sep Long getIdPerson concode_elem_sep String getBirthdate concode_elem_sep String getUsername concode_elem_sep String getPassword concode_elem_sep void setEmail concode_elem_sep void setIdPerson concode_elem_sep String getEmail concode_elem_sep void setBirthdate concode_elem_sep String getLastname
void function ( String arg0 ) { this . firstname = arg0 ; }