Changes to Derived per-ETF filing-cadence net flow estimate (creation/redemption proxy)

added the non-success response with the status 500

added the optional property meta/stale_since to the response with the 200 status

added the optional property data/period_flows/items/basis_kind to the response with the 200 status

added the optional property data/period_flows/items/basis_note to the response with the 200 status

added the optional property data/period_flows/items/from_aum_source to the response with the 200 status

added the optional property data/period_flows/items/from_nav_method to the response with the 200 status

added the optional property data/period_flows/items/from_shares_as_of to the response with the 200 status

added the optional property data/period_flows/items/split_adjustment_reason to the response with the 200 status

added the optional property data/period_flows/items/split_events_applied to the response with the 200 status

added the optional property data/period_flows/items/split_ratio_applied to the response with the 200 status

added the optional property data/period_flows/items/to_aum_source to the response with the 200 status

added the optional property data/period_flows/items/to_nav_method to the response with the 200 status

added the optional property data/period_flows/items/to_shares_as_of to the response with the 200 status

added the optional property data/sec_monthly_flows to the response with the 200 status

added the optional property data/sec_monthly_flows_reason to the response with the 200 status

added the optional property meta/data_age_days to the response with the 200 status

added the optional property meta/notes to the response with the 200 status

added the optional property meta/period to the response with the 200 status

added the optional property code to the response with the 401 status

added the optional property code to the response with the 429 status

added the optional property code to the response with the 503 status

added the optional property data/accession to the response with the 200 status

added the optional property data/reason to the response with the 200 status

added the optional property data/rep_pd_date to the response with the 200 status

added the optional property hint to the response with the 401 status

added the optional property hint to the response with the 429 status

added the optional property hint to the response with the 503 status

added the optional property plan to the response with the 401 status

added the optional property plan to the response with the 429 status

added the optional property plan to the response with the 503 status

added the optional property reason to the response with the 401 status

added the optional property reason to the response with the 429 status

added the optional property reason to the response with the 503 status

added the required property data/plateaus_observed to the response with the 200 status

added the required property data/snapshots_unusable to the response with the 200 status