Deprecate old methods

UPGRADE.md

@@ -40,11 +40,19 @@
         }
     ```
 
-1. The getter methods of `Sylius\RefundPlugin\Entity\CustomerBillingData` has been changed:
+1. The `id` method from `Sylius\RefundPlugin\Entity\CustomerBillingData` has its return type removed:
+
+    ```diff
+    -   public function id(): ?int;
+    +   public function id();
+    ```
+
+
+1. The getter methods of `Sylius\RefundPlugin\Entity\CustomerBillingData` are now deprecated and will be replaced with:
 
     ```diff
     -   public function id(): ?int
-    +   public function getId(): ?int
+    +   public function getId()
     -   public function firstName(): string
     +   public function getFirstName(): string
     -   public function lastName(): string

src/Entity/CustomerBillingData.php

@@ -46,16 +46,28 @@ class CustomerBillingData implements CustomerBillingDataInterface
     /** @var string|null */
     protected $provinceCode;
 
-    public function getId(): ?int
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getId() instead */
+    public function id()
     {
         return $this->id;
     }
 
-    public function setId(?int $id): void
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    public function setId($id): void
     {
         $this->id = $id;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getFirstName() instead */
+    public function firstName(): string
+    {
+        return $this->firstName;
+    }
+
     public function getFirstName(): string
     {
         return $this->firstName;
@@ -66,6 +78,12 @@ public function setFirstName(string $firstName): void
         $this->firstName = $firstName;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getLastName() instead */
+    public function lastName(): string
+    {
+        return $this->lastName;
+    }
+
     public function getLastName(): string
     {
         return $this->lastName;
@@ -76,11 +94,23 @@ public function setLastName(string $lastName): void
         $this->lastName = $lastName;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getFullName() instead */
+    public function fullName(): string
+    {
+        return trim(sprintf('%s %s', $this->firstName, $this->lastName));
+    }
+
     public function getFullName(): string
     {
         return trim(sprintf('%s %s', $this->firstName, $this->lastName));
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getStreet() instead */
+    public function street(): string
+    {
+        return $this->street;
+    }
+
     public function getStreet(): string
     {
         return $this->street;
@@ -91,6 +121,12 @@ public function setStreet(string $street): void
         $this->street = $street;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getPostcode() instead */
+    public function postcode(): string
+    {
+        return $this->postcode;
+    }
+
     public function getPostcode(): string
     {
         return $this->postcode;
@@ -101,6 +137,12 @@ public function setPostcode(string $postcode): void
         $this->postcode = $postcode;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getCountryCode() instead */
+    public function countryCode(): string
+    {
+        return $this->countryCode;
+    }
+
     public function getCountryCode(): string
     {
         return $this->countryCode;
@@ -111,6 +153,12 @@ public function setCountryCode(string $countryCode): void
         $this->countryCode = $countryCode;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getCity() instead */
+    public function city(): string
+    {
+        return $this->city;
+    }
+
     public function getCity(): string
     {
         return $this->city;
@@ -121,6 +169,12 @@ public function setCity(string $city): void
         $this->city = $city;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getCompany() instead */
+    public function company(): ?string
+    {
+        return $this->company;
+    }
+
     public function getCompany(): ?string
     {
         return $this->company;
@@ -131,6 +185,12 @@ public function setCompany(?string $company): void
         $this->company = $company;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getProvinceName() instead */
+    public function provinceName(): ?string
+    {
+        return $this->provinceName;
+    }
+
     public function getProvinceName(): ?string
     {
         return $this->provinceName;
@@ -141,6 +201,12 @@ public function setProvinceName(?string $provinceName): void
         $this->provinceName = $provinceName;
     }
 
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingData::getProvinceCode() instead */
+    public function provinceCode(): ?string
+    {
+        return $this->provinceCode;
+    }
+
     public function getProvinceCode(): ?string
     {
         return $this->provinceCode;

src/Entity/CustomerBillingDataInterface.php

@@ -17,7 +17,10 @@
 
 interface CustomerBillingDataInterface extends ResourceInterface
 {
-    public function setId(?int $id): void;
+    /** @deprecated this function is deprecated and will be removed in v1.0.0. Use CustomerBillingDataInterface::getId() instead */
+    public function id();
+
+    public function setId($id): void;
 
     public function getFirstName(): string;