Operation name must be unique in eclipse

I´m having a trouble with a web service implementation in eclipse (mars, neon, oxygen..)

It does not correctly validate the name of the methods and recognizes them as if they were repeated

My sample class is this:

package servicios.ecobis.cobiscorp.negocio.admin.consulta.consultadianohabil.impl;    
.......    
@javax.jws.WebService (
        endpointInterface="servicios.ecobis.cobiscorp.negocio.admin.consulta.consultadianohabil.ConsultaDiaNoHabil", 
        targetNamespace="http://cobiscorp.ecobis.servicios/negocio/admin/consulta/ConsultaDiaNoHabil/", 
        serviceName="ConsultaDiaNoHabil", 
        portName="ConsultaDiaNoHabilSOAP"
)
public class ConsulaDiaNoHabilWSImpl implements Serializable{
    ......
    private String verificarRequestParamsID(ConsultarDiasNoHabilesPorAnioRequest consultarDiasNoHabilesPorAnioRequest){                 
        ......          
    }

    private void adicionarRequestParamsID(ServiceRequestTO requestCTS, ConsultarDiasNoHabilesPorAnioRequestBody body) {                 
        ......          
    }

    private String verificarRequestParamsID(ValidarDiaNoHabilRequest validarDiaNoHabilRequest){         
        ......          
    }

    private void adicionarRequestParamsID(ServiceRequestTO requestCTS, ValidarDiaNoHabilRequestBody body) {             
        .......         
    }

}    

Eclipse shows this error:

Operation names must be unique :'{http://cobiscorp.ecobis.servicios/negocio/admin/consulta/ConsultaDiaNoHabil/}adicionarRequestParamsID'    ConsulaDiaNoHabilWSImpl.java    /WSAdmin/src/servicios/ecobis/cobiscorp/negocio/admin/consulta/consultadianohabil/impl  line 292    Annotation Problem

I have found this bug reported in eclipse but it seems without solution

Thanks for any help.