How to use the @theia/editor/lib/browser.EditorKeybindingContexts.editorTextFocus function in @theia/editor

keybinding: this.keyCode(keybinding).toString(),
                        context: EditorKeybindingContexts.editorTextFocus,
                    });
                } else {
                    // FIXME support chord keybindings properly, KeyCode does not allow it right now
                }
            }
        }

        // `Select All` is not an editor action just like everything else.
        const selectAllCommand = this.commands.validate(MonacoCommands.SELECTION_SELECT_ALL);
        if (selectAllCommand) {
            registry.registerKeybinding({
                command: selectAllCommand,
                keybinding: "ctrlcmd+a",
                context: EditorKeybindingContexts.editorTextFocus,
            });
        }
    }

});
        keybindings.registerKeybinding({
            command: DebugCommands.CONTINUE.id,
            keybinding: 'f5',
            context: DebugKeybindingContexts.inDebugMode
        });
        keybindings.registerKeybinding({
            command: DebugCommands.PAUSE.id,
            keybinding: 'f6',
            context: DebugKeybindingContexts.inDebugMode
        });

        keybindings.registerKeybinding({
            command: DebugCommands.TOGGLE_BREAKPOINT.id,
            keybinding: 'f9',
            context: EditorKeybindingContexts.editorTextFocus
        });

        keybindings.registerKeybinding({
            command: DebugBreakpointWidgetCommands.ACCEPT.id,
            keybinding: 'enter',
            context: DebugKeybindingContexts.breakpointWidgetInputFocus
        });
        keybindings.registerKeybinding({
            command: DebugBreakpointWidgetCommands.CLOSE.id,
            keybinding: 'esc',
            context: DebugKeybindingContexts.breakpointWidgetInputStrictFocus
        });
    }

registerKeybindings(keybindings: KeybindingRegistry): void {
        keybindings.registerKeybinding({
            command: BlameCommands.TOGGLE_GIT_ANNOTATIONS.id,
            context: EditorKeybindingContexts.editorTextFocus,
            keybinding: 'alt+b'
        });
        keybindings.registerKeybinding({
            command: BlameCommands.CLEAR_GIT_ANNOTATIONS.id,
            context: BlameAnnotationsKeybindingContext.showsBlameAnnotations,
            keybinding: 'esc'
        });
    }