update go docs and examples

docs/tools/sdk/go/Reference/Beta/Models/SourceItemRef.md

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+---
+id: beta-source-item-ref
+title: SourceItemRef
+pagination_label: SourceItemRef
+sidebar_label: SourceItemRef
+sidebar_class_name: gosdk
+keywords: ['go', 'Golang', 'sdk', 'SourceItemRef', 'BetaSourceItemRef'] 
+slug: /tools/sdk/go/beta/models/source-item-ref
+tags: ['SDK', 'Software Development Kit', 'SourceItemRef', 'BetaSourceItemRef']
+---
+
+# SourceItemRef
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**SourceId** | Pointer to **NullableString** | The id for the source on which account selections are made | [optional] 
+**Accounts** | Pointer to [**[]AccountItemRef**](account-item-ref) | A list of account selections on the source. Currently, only one selection per source is supported. | [optional] 
+
+## Methods
+
+### NewSourceItemRef
+
+`func NewSourceItemRef() *SourceItemRef`
+
+NewSourceItemRef instantiates a new SourceItemRef object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewSourceItemRefWithDefaults
+
+`func NewSourceItemRefWithDefaults() *SourceItemRef`
+
+NewSourceItemRefWithDefaults instantiates a new SourceItemRef object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetSourceId
+
+`func (o *SourceItemRef) GetSourceId() string`
+
+GetSourceId returns the SourceId field if non-nil, zero value otherwise.
+
+### GetSourceIdOk
+
+`func (o *SourceItemRef) GetSourceIdOk() (*string, bool)`
+
+GetSourceIdOk returns a tuple with the SourceId field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetSourceId
+
+`func (o *SourceItemRef) SetSourceId(v string)`
+
+SetSourceId sets SourceId field to given value.
+
+### HasSourceId
+
+`func (o *SourceItemRef) HasSourceId() bool`
+
+HasSourceId returns a boolean if a field has been set.
+
+### SetSourceIdNil
+
+`func (o *SourceItemRef) SetSourceIdNil(b bool)`
+
+ SetSourceIdNil sets the value for SourceId to be an explicit nil
+
+### UnsetSourceId
+`func (o *SourceItemRef) UnsetSourceId()`
+
+UnsetSourceId ensures that no value is present for SourceId, not even an explicit nil
+### GetAccounts
+
+`func (o *SourceItemRef) GetAccounts() []AccountItemRef`
+
+GetAccounts returns the Accounts field if non-nil, zero value otherwise.
+
+### GetAccountsOk
+
+`func (o *SourceItemRef) GetAccountsOk() (*[]AccountItemRef, bool)`
+
+GetAccountsOk returns a tuple with the Accounts field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetAccounts
+
+`func (o *SourceItemRef) SetAccounts(v []AccountItemRef)`
+
+SetAccounts sets Accounts field to given value.
+
+### HasAccounts
+
+`func (o *SourceItemRef) HasAccounts() bool`
+
+HasAccounts returns a boolean if a field has been set.
+
+### SetAccountsNil
+
+`func (o *SourceItemRef) SetAccountsNil(b bool)`
+
+ SetAccountsNil sets the value for Accounts to be an explicit nil
+
+### UnsetAccounts
+`func (o *SourceItemRef) UnsetAccounts()`
+
+UnsetAccounts ensures that no value is present for Accounts, not even an explicit nil
+