keybinding.json, ctrl + s, ctrl + k
// Place your key bindings in this file to overwrite the defaults

[
    {
        "key": "ctrl+]",
        "command": "editor.action.goToDeclaration",
        "when": "editorHasDefinitionProvider && editorTextFocus && !isInEmbeddedEditor"
    },
    {
        "key": "ctrl+t",
        "command": "workbench.action.navigateBack"
    },
    {
        "key": "cmd+1",
        "command": "workbench.action.openEditorAtIndex1"
    },
    {
        "key": "cmd+2",
        "command": "workbench.action.openEditorAtIndex2"
    },
    {
        "key": "cmd+3",
        "command": "workbench.action.openEditorAtIndex3"
    },
    {
        "key": "cmd+4",
        "command": "workbench.action.openEditorAtIndex4"
    },
    {
        "key": "cmd+5",
        "command": "workbench.action.openEditorAtIndex5"
    },
    {
        "key": "cmd+6",
        "command": "workbench.action.openEditorAtIndex6"
    },
    {
        "key": "cmd+7",
        "command": "workbench.action.openEditorAtIndex7"
    },
    {
        "key": "cmd+8",
        "command": "workbench.action.openEditorAtIndex8"
    },
    {
        "key": "cmd+9",
        "command": "workbench.action.openEditorAtIndex9"
    },
    {
        "key": "ctrl+k",
        "command": "workbench.action.switchWindow"
    },
    {
        "key": "ctrl+p",
        "command": "workbench.action.quickOpen"
    },
    {
        "key": "ctrl+j",
        "command": "workbench.action.quickOpenNavigateNext",
        "when": "inQuickOpen"
    },
    {
        "key": "ctrl+k",
        "command": "workbench.action.quickOpenNavigatePrevious",
        "when": "inQuickOpen"
    },
    {
        "key": "shift+cmd+g",
        "command": "workbench.view.scm"
}
]