@Produces({ MediaType.APPLICATION_JSON })
public String retrieveAll(@PathParam("ppiName") final String ppiName) {
this.context.authenticatedUser().validateHasReadPermission(PovertyLineApiConstants.POVERTY_LINE_RESOURCE_NAME);
PpiPovertyLineData povertyLine = this.readService.retrieveAll(ppiName);
return this.toApiJsonSerializer.serialize(povertyLine);
}