adding powershell sdk docs back

docs/tools/sdk/powershell/Reference/V3/Models/MetricAggregation.md

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+---
+id: metric-aggregation
+title: MetricAggregation
+pagination_label: MetricAggregation
+sidebar_label: MetricAggregation
+sidebar_class_name: powershellsdk
+keywords: ['powershell', 'PowerShell', 'sdk', 'MetricAggregation', 'MetricAggregation'] 
+slug: /tools/sdk/powershell/v3/models/metric-aggregation
+tags: ['SDK', 'Software Development Kit', 'MetricAggregation', 'MetricAggregation']
+---
+
+
+# MetricAggregation
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Name** |  **String** | The name of the metric aggregate to be included in the result. If the metric aggregation is omitted, the resulting aggregation will be a count of the documents in the search results. | [required]
+**Type** |  Pointer to [**MetricType**](metric-type) |  | [optional] 
+**Field** |  **String** | The field the calculation is performed on.  Prefix the field name with '@' to reference a nested object.  | [required]
+
+## Examples
+
+- Prepare the resource
+```powershell
+$MetricAggregation = Initialize-PSSailpoint.V3MetricAggregation  -Name Access Name Count `
+ -Type null `
+ -Field @access.name
+```
+
+- Convert the resource to JSON
+```powershell
+$MetricAggregation | ConvertTo-JSON
+```
+
+
+[[Back to top]](#) 
+