"info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "get": {
                    "summary": "Read Items",
                    "operationId": "read_items_items__get",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "X-Token", "type": "string"},

FastAPIが実際にチェックしているのは、それが「呼び出し可能」（関数、クラス、その他なんでも）であり、パラメータが定義されているかどうかということです。

**FastAPI** の依存関係として「呼び出し可能なもの」を渡すと、その「呼び出し可能なもの」のパラメータを解析し、サブ依存関係も含めて、*path operation関数*のパラメータと同じように処理します。

それは、パラメータが全くない呼び出し可能なものにも適用されます。パラメータのない*path operation関数*と同じように。

そこで、上で紹介した依存関係の`common_parameters`を`CommonQueryParams`クラスに変更します:

```Python hl_lines="11 12 13 14 15"
{!../../docs_src/dependencies/tutorial002.py!}
```

			b := disk.AlignedBlock(SmallBlock)
			return &b
		},
	}
)

// WriteOnCloser implements io.WriteCloser and always
// executes at least one write operation if it is closed.
//
// This can be useful within the context of HTTP. At least
// one write operation must happen to send the HTTP headers
// to the peer.
type WriteOnCloser struct {
	io.Writer
	hasWritten bool
}

    - tutorial/handling-errors.md
    - tutorial/path-operation-configuration.md
    - tutorial/encoder.md
    - tutorial/body-updates.md
    - Dependencies:
      - tutorial/dependencies/index.md
      - tutorial/dependencies/classes-as-dependencies.md
      - tutorial/dependencies/sub-dependencies.md
      - tutorial/dependencies/dependencies-in-path-operation-decorators.md
      - tutorial/dependencies/global-dependencies.md

indent 12 }} {{- with .Values.nodeSelector }} nodeSelector: {{ toYaml . | indent 8 }} {{- end }} {{- include "minio.imagePullSecrets" . | indent 6 }} {{- with .Values.affinity }} affinity: {{ toYaml . | indent 8 }} {{- end }} {{- with .Values.tolerations }} tolerations: {{ toYaml . | indent 8 }} {{- end }} volumes: - name: export {{- if .Values.persistence.enabled }} persistentVolumeClai: claimName: {{ .Values.persistence.existingClaim | default (include "minio.fullname" .) }} {{- else }} emptyDir: {}...

indent 12 }} {{- with .Values.nodeSelector }} nodeSelector: {{ toYaml . | indent 8 }} {{- end }} {{- include "minio.imagePullSecrets" . | indent 6 }} {{- with .Values.affinity }} affinity: {{ toYaml . | indent 8 }} {{- end }} {{- with .Values.tolerations }} tolerations: {{ toYaml . | indent 8 }} {{- end }} volumes: - name: export {{- if .Values.persistence.enabled }} persistentVolumeClai: claimName: {{ .Values.persistence.existingClaim | default (include "minio.fullname" .) }} {{- else }} emptyDir: {}...

indent 12 }} {{- with .Values.nodeSelector }} nodeSelector: {{ toYaml . | indent 8 }} {{- end }} {{- include "minio.imagePullSecrets" . | indent 6 }} {{- with .Values.affinity }} affinity: {{ toYaml . | indent 8 }} {{- end }} {{- with .Values.tolerations }} tolerations: {{ toYaml . | indent 8 }} {{- end }} volumes: - name: export {{- if .Values.persistence.enabled }} persistentVolumeClai: claimName: {{ .Values.persistence.existingClaim | default (include "minio.fullname" .) }} {{- else }} emptyDir: {}...

indent 12 }} {{- with .Values.nodeSelector }} nodeSelector: {{ toYaml . | indent 8 }} {{- end }} {{- include "minio.imagePullSecrets" . | indent 6 }} {{- with .Values.affinity }} affinity: {{ toYaml . | indent 8 }} {{- end }} {{- with .Values.tolerations }} tolerations: {{ toYaml . | indent 8 }} {{- end }} volumes: - name: export {{- if .Values.persistence.enabled }} persistentVolumeClai: claimName: {{ .Values.persistence.existingClaim | default (include "minio.fullname" .) }} {{- else }} emptyDir: {}...

                            "content": {"text/html": {"schema": {"type": "string"}}},
                        }
                    },
                    "summary": "Read Items",
                    "operationId": "read_items_items__get",
                }
            }
        },

                            "content": {"application/json": {"schema": {}}},
                        }
                    },
                    "summary": "Read Main",
                    "operationId": "read_main__get",
                }
            }
        },