How to use the web3-core.addProviders function in web3-core

}
                }
            }
        })
    ];

    methods.forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager, _this.accounts); // second param means is eth.accounts (necessary for wallet signing)
        method.defaultBlock = _this.defaultBlock;
        method.defaultAccount = _this.defaultAccount;
    });

};

core.addProviders(Eth);


module.exports = Eth;

}
                }
            }
        })
    ];

    methods.forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager, _this.accounts); // second param means is eth.accounts (necessary for wallet signing)
        method.defaultBlock = _this.defaultBlock;
        method.defaultAccount = _this.defaultAccount;
    });

};

core.addProviders(Eth);


module.exports = Eth;

}
                }
            }
        })
    ];

    methods.forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager, _this.accounts); // second param means is eth.accounts (necessary for wallet signing)
        method.defaultBlock = _this.defaultBlock;
        method.defaultAccount = _this.defaultAccount;
    });

};

core.addProviders(Eth);


module.exports = Eth;

new Method({
            name: 'unsubscribe',
            call: 'shh_unsubscribe',
            params: 1
        })
    ].forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager);
    });
};

Shh.prototype.clearSubscriptions = function () {
     this._requestManager.clearSubscriptions();
};

core.addProviders(Shh);



module.exports = Shh;

params: 0
        }),
        new Method({
            name: 'getPeerCount',
            call: 'net_peerCount',
            params: 0,
            outputFormatter: utils.hexToNumber
        })
    ].forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager);
    });

};

core.addProviders(Net);


module.exports = Net;

return true;
    };
};

Web3.version = version;
Web3.utils = utils;
Web3.modules = {
    Eth: Eth,
    Net: Net,
    Personal: Personal,
    Shh: Shh,
    Bzz: Bzz
};

core.addProviders(Web3);

module.exports = Web3;

new Method({
            name: 'ecRecover',
            call: 'personal_ecRecover',
            params: 2,
            inputFormatter: [formatters.inputSignFormatter, null]
        })
    ];
    methods.forEach(function(method) {
        method.attachToObject(_this);
        method.setRequestManager(_this._requestManager);
        method.defaultBlock = _this.defaultBlock;
        method.defaultAccount = _this.defaultAccount;
    });
};

core.addProviders(Personal);



module.exports = Personal;