How to use the apache-ignite-client.STATE function in apache-ignite-client

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}

function onStateChanged(state, reason) {
    if (state === IgniteClient.STATE.CONNECTED) {
        console.log('Client is started');
    }
    else if (state === IgniteClient.STATE.CONNECTING) {
        console.log('Client is connecting');
    }
    else if (state === IgniteClient.STATE.DISCONNECTED) {
        console.log('Client is stopped');
        if (reason) {
            console.log(reason);
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }

function onStateChanged(state, reason) {
    if (state === IgniteClient.STATE.CONNECTED) {
        console.log('Client is started');
    }
    else if (state === IgniteClient.STATE.CONNECTING) {
        console.log('Client is connecting');
    }
    else if (state === IgniteClient.STATE.DISCONNECTED) {
        console.log('Client is stopped');
        if (reason) {
            console.log(reason);
        }
    }
}

onStateChanged(state, reason) {
        if (state === IgniteClient.STATE.CONNECTED) {
            console.log('Client is started');
        }
        else if (state === IgniteClient.STATE.DISCONNECTED) {
            console.log('Client is stopped');
            if (reason) {
                console.log(reason);
            }
        }
    }
}